List of top Questions asked in NEET (UG)- 2001

For a coil having L = 2 mH, current flow through it is $I= t^2e^{-l}$ then, the time at which emf become zero
During an injury nasal septum gets damaged and for its recovery which cartilage is preferred?

Which statement is incorrect 

The current (I) in the circuit will be : -
 

current (I) in the circuit
Enthalpy of CH4+\(\frac{1}{2}\)O2\(\rightarrow\)CH3OH is negative. If enthalpy of combustion of CH4 and CH3OH are x and y respectively. Then which relation is correct : -

The interplaner distance in a crystal is 2.8 × 10-8 m. The value of maximum wavelength which can be diffracted : - 

If a ^b aX species emits firstly a positron, then two α and two β and at last one α is also after intially it fainally convets into stable ^c dY species so correct relation will be

Coordination number of Ni in [(C2O4)3]-4 is 

For a common emitter circuit if \(\frac{IC}{IE}=0.98\) then current gain for common emitter circuit will be

A charge Q µc is placed at the centre of cube, the flux coming out from any surfaces will be : -

Among which the magnetic susceptibility does not depend on the temperature
Zn convert it's melted state to its solid state, it has HCP structure, then find out nearest no. of nearest atom

If number of turn, area and current through it is given by n, A and i respectively then its magnetic moment will be : - 

A photo-cell is illuminated by a source of light,which is placed at a distance d from the cell.If the distance become d/2, then number of electrons emited per second will be
In BCC, the distance between two nearest atoms will be 
A disc is rolling the velocity of its centre of mass is Vcm then which one will be correct
Which of following organometallic compound is \(\sigma\) and \(\pi\) bonded 

Following truth table represent which logic gate -

ABC
110
011
101
001

CH3-CH2-CH-CH3 obtained by chlorination of n-butane will be 
                 |
                CI     

PbO2 \(\rightarrow\) PbO                            ∆G298< 0,

SnO2 \(\rightarrow\) SnO                            ∆G298 > 0,
Most probable oxidation state of Pb & Sn will be

A capacitor of capacity C and reactance X if capacitance and frequency become double then

In HS-,I-,R–NH2, NH3 order of proton excepting tendency will be :-

250 N force is required to raise 75 kg mass from a pulley. If rope is pulled 12 m then the load is lifted to 3m, the efficiency of pulley system will be

On the horizontal surface of a truck a block of mass 1 kg is placed (µ = 0.6) and truck is moving with acceleration 5 m/s2 then the frictional force on block will be : -

Which rays contain (+ Ve) charged particle